#define  _CRT_SECURE_NO_WARNINGS
#include<iostream>
#include<string>
using namespace std;

void test01()
{
	string s1("helloworld");
	s1.resize(5);
	s1.resize(20, 'x');
	cout << s1 << endl;

}

int main()
{

	test01();
	return 0;
}